4.6 Article

Theoretical study of Zr doping on the stability, mechanical, electronic and optical properties of Cs2TiI6

Journal

OPTICAL MATERIALS
Volume 110, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.optmat.2020.110497

Keywords

Cs2TiI6; Zr doping; Stability; Band gap; Optical absorption; DFT

Funding

  1. Department of Fujian Science and Technology
  2. Program for Innovative Research Team in Science and Technology in Fujian Province University [2018N2001]

Ask authors/readers for more resources

In recent years, all-inorganic lead-free double perovskites have attracted great attention due to their excellent optoelectronic properties. In this work, we have investigated the structural stability, mechanical, electronic and optical properties of Cs2Ti1-xZrxI6 (x = 0, 0.25, 0.5, 0.75, 0.875, 1) based on first-principles calculations for the first time. With the increase of Zr doping concentration, the structural stability of Cs2TiI6 is improved. Moreover, these mixed Cs2Ti1-xZrxI6 systems are predicted to be stable according to the phonon spectrum calculation results. Our calculated results suggest that these Zr-doped double perovskites are brittle materials. When the value of x changes from 0 to 0.875, the band gap variation of Cs2Ti1-xZrxI6 is only 0.26 eV. However, the optical absorption coefficients are apparently decreased after Zr doping. The mixed Cs2Ti1-xZrxI6 systems have suitable band gaps for single-junction solar cells. The band gap of Cs2ZrI6 is predicted to be 1.92 eV, which is an ideal material for tandem solar cell. Our study is expected to explore their future applications in perovskite solar cells.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Engineering, Environmental

Boosting photocatalytic reduction of the diluted CO2 over covalent organic framework

Haowei Lv, Pengyue Li, Xiaoju Li, Aicheng Chen, Rongjian Sa, Hu Zhu, Ruihu Wang

Summary: In this study, covalent organic framework nanosheets containing bis-chelating Ni coordination sites were reported for the selective photoreduction of diluted CO2. The results showed that bis-chelating metal coordination units were more favorable active sites for the photocatalytic reduction of diluted CO2, leading to improved catalytic efficiency and selectivity.

CHEMICAL ENGINEERING JOURNAL (2023)

Article Engineering, Environmental

The construction of conjugated organic polymers containing phenanthrenequinone redox centers for visible-light-driven H2O2 production from H2O and O2 without any additives

Xiahong Xu, Hong Zhong, Wei Huang, Yan Sui, Rongjian Sa, Wentong Chen, Gangyong Zhou, Xiaodan Li, Duofu Li, Meicheng Wen, Bo Jiang

Summary: This article presents a conjugated organic polymer that can efficiently produce hydrogen peroxide from water and oxygen under visible light irradiation. The polymer has excellent photocatalytic performance and can generate hydrogen peroxide at a high rate without the use of any additives.

CHEMICAL ENGINEERING JOURNAL (2023)

Article Chemistry, Physical

First-principles study of physical properties of Zn1-xCdxTe, Zn1-xHgxTe, and Cd1-xHgxTe ternary alloys

Diwen Liu, Hongyan Zeng, Rongjian Sa

Summary: The structural parameters, dynamic stability, electronic, and optical properties of Zn1-xCdxTe, Zn1-xHgxTe, and Cd1-xHgxTe ternary alloys were systematically studied. These ternary alloys were found to be dynamically stable. Direct electronic transitions were allowed at the Gamma point for all compounds. The band gap energy showed a drastic decrease from ZnTe to HgTe. By alloy engineering, the band gap energy could be varied in a wide range of 0-2 eV. Several novel compounds exhibited suitable band gaps (1.3-1.6 eV) and good carrier mobility for potential optoelectronic applications. Optical properties were compared in the visible region, and an improvement in the absorption coefficient was observed for Zn0.75Hg0.25Te and Cd0.75Hg0.25Te. This study will contribute to the discovery of desired materials with low toxicity and high efficiency for solar cells.

CHEMICAL PHYSICS (2023)

Article Physics, Condensed Matter

The elastic, electronic, and optical properties of BaGe2P2 and BaGe2As2: A first-principles study

Meng Liu, Mengli Qin, Rongjian Sa, Diwen Liu

Summary: In this study, the structural, elastic, electronic, and optical properties of BaGe2P2 and BaGe2As2 have been extensively investigated. The simulated structural parameters are consistent with experimental data. Both compounds are mechanically stable and brittle materials. They are found to be indirect band gap semiconductors, with the band gap reduction attributed to the substitution of P by As. The calculated band gap of BaGe2P2 is suitable for optoelectronic applications. The analysis of optical properties reveals that BaGe2P2 exhibits strong optical absorption in the visible region. This work provides valuable information for further experimental exploration of BaGe2P2's potential in solar cells.

PHYSICA B-CONDENSED MATTER (2023)

Article Chemistry, Physical

Built-in electric field-assisted W-C3/X-C3 van der Waals heterogeneous single-atom catalysts for enhanced electrocatalytic nitrogen reduction

Xiaojing Liu, Shuaishuai Gao, Zhiwei Wang, Yujie Sun, Guoning Feng, Xin Chen, Rongjian Sa, Qiaohong Li, Zuju Ma

Summary: This study presents a new design of van der Waals heterogeneous single-atom catalysts (vdW-SACs) for electrocatalytic nitrogen reduction reaction (eNRR). Large-scale density functional theory (DFT) calculations were employed to investigate the stability, NRR activity, and selectivity of these vdW-SACs. It was found that the W-C3/P-C3 catalyst exhibits the highest activity with the lowest overpotential due to the asymmetric active sites and the pd hybridization between W 5d orbitals and N2 π* antibonding orbitals. This research provides new insights for the development of advanced electrocatalysts for NRR and beyond.

APPLIED SURFACE SCIENCE (2023)

Article Materials Science, Multidisciplinary

First-principles calculations to investigate structure and fundamental physical properties of BaM2As2 (M 1/4 Mg, Zn, Cd) and their alloys

Diwen Liu, Huihui Zeng, Rongjian Sa

Summary: This study reveals for the first time the energetic stability, elastic parameters, electronic structures, effective masses, and optical properties of BaM2As2 (M = Mg, Zn, Cd) and their alloys. The preferred phase for BaMg2As2 and BaCd2As2 is trigonal, while BaZn2As2 may have an additional stable trigonal phase. The dynamical stability is identified for four novel compounds, and their mechanical stability is confirmed. The band gap energy decreases significantly from BaMg2As2 (1.64 eV) to BaCd2As2 (0.80 eV). Different electronic properties are found for three phases of BaZn2As2. The band gap calculations agree with experimental results. The bandgap transition behavior and optoelectronic properties of three alloys are disclosed, with Ba(Mg0.5Zn0.5)2As2 and Ba(Mg0.5Cd0.5)2As2 showing desirable optoelectronic properties. These findings are expected to assist in discovering novel stable inorganic compounds for potential photovoltaic applications.

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T (2023)

Article Chemistry, Physical

Controlled synthesis of hollow carbon ring incorporated g-C3N4 tubes for boosting photocatalytic H2O2 production

Hao Luo, Tianshang Shan, Jianwen Zhou, Liulian Huang, Lihui Chen, Rongjian Sa, Yusuke Yamauchi, Jungmok You, Yusuke Asakura, Zhanhui Yuan, He Xiao

Summary: Solar-driven photocatalytic route for H2O2 production has gained attention. Carbon ring incorporated hollow g-C3N4 tubes (CHCN) with significantly higher H2O2 yield than bulk g-C3N4 were successfully fabricated. The optimized CHCN catalyst demonstrated efficient ORR routes for H2O2 production. This work provides a new strategy for efficient H2O2 formation and explores the mechanism of the ORR process for highly efficient H2O2 generation.

APPLIED CATALYSIS B-ENVIRONMENTAL (2023)

Article Materials Science, Ceramics

Tuning charge transfer between size-controlled Pt cluster and N vacancy engineered ultrathin g-C3N4 for efficient photocatalytic hydrogen evolution

Huanhuan Zhai, Zhuolin Liu, Jiaxin Tong, Yi Zhang, Binhua Zhou, Pengfei Tan, Rongjian Sa, Jun Pan

Summary: This study incorporates Pt clusters onto N vacancy engineered ultrathin g-C3N4 by a photo-deposition method to fabricate highly active photocatalysis. The Pt clusters on vUCN enable efficient electron transfer and band-gap optimization, resulting in superior photocatalytic performance.

CERAMICS INTERNATIONAL (2023)

Article Chemistry, Inorganic & Nuclear

Theoretical exploration of the structure and physical properties of YbZn2X2 (X = N, P, As, Sb)

Rongjian Sa, Yanjie Zhang, Yali Huang, Yuansong Ye, Xiaodan Huang, Huihui Zeng, Diwen Liu

Summary: In this study, a comprehensive theoretical analysis is conducted on the structural parameters, dynamic stability, elastic properties, and optoelectronic characteristics of YbZn2X2 (X = N, P, As, Sb). The results show that YbZn2N2 is dynamically stable and the elastic constants meet the mechanical stability criteria. The analysis of electronic properties reveals that YbZn2X2 (X = N, Sb) and YbZn2X2 (X = P, As) are direct and indirect band gap semiconductors, respectively. YbZn2As2 exhibits an optimal band gap of approximately 1.2 eV and a high optical absorption coefficient, making it a promising candidate for optoelectronic devices.

JOURNAL OF SOLID STATE CHEMISTRY (2023)

Article Chemistry, Physical

Defective SiC nanotube based single-atom catalysts for electrocatalytic nitrogen fixation with curvature effect

Zhiwei Wang, Shuaishuai Gao, Xiaojing Liu, Xin Chen, Xintao Zhang, Rongjian Sa, Qiaohong Li, Chenghua Sun, Zuju Ma

Summary: This study investigates the effect of curvature variation on the catalytic activity of silicon carbide nanotubes (SiCNTs) decorated with single-atom catalysts on nitrogen reduction reaction (NRR). The Os@SiCNT catalyst shows promising activity as an eNRR catalyst with high selectivity. The findings suggest that reducing the diameter of the nanotubes decreases the energy barrier of the NRR reaction but also reduces the adsorption capacity of N2, which may affect the selectivity.

MOLECULAR CATALYSIS (2023)

Article Chemistry, Physical

Computational study of the fundamental properties of Zr-based chalcogenide perovskites for optoelectronics

Diwen Liu, Huihui Zeng, Huan Peng, Rongjian Sa

Summary: This study investigates the relative stability and photoactive properties of chalcogenide perovskites AZrX(3) (A = Ca, Sr, Ba; X = S, Se) and reveals the difference in stability between the alpha and beta phases. Only the beta phase exhibits the fundamental direct gap transition, which is confirmed by its optical properties. Moreover, the distorted chalcogenide perovskites AZrS(3-x)Se(x) (x = 0, 1, 2, 3) are found to have suitable direct band gaps and high optical absorption coefficients. CaZrSe3, SrZrSe3, and BaZrSe3 are proposed as the most promising candidates for photovoltaic applications.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2023)

Article Chemistry, Multidisciplinary

Iron/cobalt/nickel regulation for efficient photocatalytic carbon dioxide reduction over phthalocyanine covalent organic frameworks

Qiqi Zhang, Meiyan Chen, Yanjie Zhang, Yuansong Ye, Diwen Liu, Chao Xu, Zuju Ma, BenYong Lou, Rusheng Yuan, Rongjian Sa

Summary: This study investigates the electronic structure of metal phthalocyanine covalent organic frameworks and the reaction process of CO2 reduction. The results show that these frameworks have a good photo response and are potential photocatalytic materials. Different frameworks exhibit different reaction mechanisms and selectivity in generating CO2 reduction products.

NANOSCALE (2023)

Article Chemistry, Physical

A theoretical exploration of the structural feature, mechanical, and optoelectronic properties of Au-based halide perovskites A2AuIAuIIIX6 (A = Rb, Cs; X = Cl, Br, I)

Diwen Liu, Huihui Zeng, Huan Peng, Rongjian Sa

Summary: In this research, comprehensive theoretical calculations were conducted to investigate the structural features, stability, mechanical behavior, optoelectronic properties, and photovoltaic performance of inorganic Au-based halide perovskites. The study revealed that certain compounds exhibit high efficiency and suitable band gaps for single-junction solar cells, as well as high absorption coefficients in the visible region.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2023)

Article Chemistry, Analytical

Exploring the potential of electrospun polymer-coated Ag nanofibers for synergistic SERS performance and real-world applications

Ying Xu, Yang Zhang, Zhiyu Li, Yuanrong Liao, Rongjian Sa, Hualiang Yu, Yizhi Wang, Jing Peng, Yan Lin, Jun Wang

Summary: Electrospinning is a crucial technique for fabricating polymer-stabilized composite nanofibers for surface-enhanced Raman scattering (SERS). Further exploration of the surface chemistry of these electro-spun composite substrates is crucial to manipulate the charge transfer (CT) effect and achieve synergistic effects between CT and localized surface plasmon resonance (LSPR) for enhanced bio-labeling and pesticide detection.

SENSORS AND ACTUATORS B-CHEMICAL (2023)

Article Chemistry, Multidisciplinary

Iron/cobalt/nickel regulation for efficient photocatalytic carbon dioxide reduction over phthalocyanine covalent organic frameworks

Qiqi Zhang, Meiyan Chen, Yanjie Zhang, Yuansong Ye, Diwen Liu, Chao Xu, Zuju Ma, BenYong Lou, Rusheng Yuan, Rongjian Sa

Summary: Using solar photocatalytic CO2 reduction to produce high-value-added products is a promising solution to environmental problems caused by greenhouse gases. Metal phthalocyanine covalent organic frameworks (COFs) possess suitable band structures and strong light absorption ability, making them potential photocatalytic materials. The electronic structure and reaction process of CO2 reduction in three MPc-TFPN-COFs (M = Ni, Co, Fe) were studied using density functional theory calculations. The results demonstrate that these COFs have good photo response to visible light and show different reaction mechanisms and selectivity in generating CO2 reduction products.

NANOSCALE (2023)

Article Materials Science, Multidisciplinary

Fabrication and luminescence properties of Al2O3-Ce:LuAG composite phosphor ceramics for solid-state laser lighting

Yanbin Wang, Xinyou Huang, Ziqiu Cheng, Penghui Chen, Yuyang Chen, Junhao Ye, Haohong Chen, Zhenzhen Zhou, Denis Yu Kosyanov, Jiang Li

Summary: Uniform Al2O3-Ce:LuAG composite phosphor ceramics (CPCs) with excellent luminescent properties and thermal stability have been successfully synthesized in this study, showing great potential for application in solid-state laser lighting.

OPTICAL MATERIALS (2024)

Article Materials Science, Multidisciplinary

Effect of laser irradiance on opto-electrical properties of PVA embedded graphene copper ferrite nanocomposite strips

Syed Muhammad Ali Zaidi, Mazhar Ali Kalyar, Zulfiqar Ali Raza, Aayesha Shoukat, Rubaila Waseem, Muhammad Aslam

Summary: Polyvinyl alcohol (PVA) nanocomposite strips embedded with graphene nanosheets and copper-ferrite nanoparticles were synthesized using solution casting technique. Laser pulse irradiations were then applied to modify the structural, optical, and electrical properties of the strips, showing potential for optoelectronic devices.

OPTICAL MATERIALS (2024)

Article Materials Science, Multidisciplinary

Angular non-critical phase-matching second harmonic generation with the Ba3(ZnB5O10)PO4 crystal

Yunru Chen, Jialing Wu, Jiajia Wang, Shihui Ma, Hongwei Yu

Summary: This paper investigates the angular non-critical phase-matching second-harmonic-generation properties of Ba3(ZnB5O10)PO4 crystal and explores its potential applications in the output spectral regions.

OPTICAL MATERIALS (2024)

Article Materials Science, Multidisciplinary

Two noncentrosymmetric alkali metal phosphates MZnPO4 (M = Rb, Cs) with honeycomb-like structures

Qun Jing, Menglin Zhu, Lu Li, Xu Ji, Haiming Duan, Henglei Chen, Ming-Hsien Lee

Summary: The paper introduces two new nonlinear optical materials, MZnPO4 (M = Rb, Cs), synthesized by cation substitution. These materials exhibit a honeycomb-like structure and show mild SHG responses with short absorption edges. The thermal properties, IR spectra, and theoretical calculations of the materials are also discussed.

OPTICAL MATERIALS (2024)

Article Materials Science, Multidisciplinary

Evaluation of microscale crystallinity modification induced by laser writing on Mn3O4 thin films

Camila Ianhez-Pereira, Akhil Kuriakose, Ariano De Giovanni Rodrigues, Ana Luiza Costa Silva, Ottavia Jedrkiewicz, Monica Bollani, Marcio Peron Franco de Godoy

Summary: This study aims to evaluate the crystalline changes induced by ultrafast laser micromachining on manganese oxide thin films using micro-Raman spectroscopy. The results show that laser-writing is effective in locally modifying low-crystallinity films and increasing crystallite sizes, highlighting an interesting approach to evaluate laser-induced structural modifications on metal oxide thin films.

OPTICAL MATERIALS (2024)

Article Materials Science, Multidisciplinary

Studies of luminescence traits and Judd-Ofelt analysis of Sm3+ activated oxyfluoride glasses

Kamal Bansal, Neeraj Kumar Mishra, Ibrahim Abdullahi, Param Jeet Singh, Mohit Tyagi, Sukhpal Singh

Summary: A novel Sm3+ activated oxyfluoride glass was synthesized and its structure and properties were analyzed. The glass showed potential applications in lasers, optical temperature sensing, and high-energy scintillators.

OPTICAL MATERIALS (2024)

Article Materials Science, Multidisciplinary

Design and optimization of the performance of self-powered Sb2S3 photodetector by SCAPS-1D simulation and potential application in imaging

Xingjian Wang, Zhixu Wu, Jiawei Zhu, Yubin Kang, Mengqiang Cai, Yong Xia, Hui Deng

Summary: Antimony sulfide (Sb2S3) has been investigated as a promising material for visible light photodetectors due to its non-toxicity, stability, and high absorption coefficient. In this study, we systematically explored the impact of key parameters on the performance of Sb2S3 devices using simulation and successfully fabricated self-powered photodetectors with high responsivity and specific detectivity. Furthermore, we demonstrated the application of the Sb2S3 detector in a scanning imaging system, showcasing its potential for developing new types of visible light detectors and imaging systems.

OPTICAL MATERIALS (2024)

Article Materials Science, Multidisciplinary

Gamma-irradiated fluorophosphate glasses doped with various transition metals: A spectroscopic study

O. I. Sallam, R. M. Ahmed

Summary: The 20NaF-60P2O5-20Na2O fluorophosphate glass systems doped with 3 wt% of CoO and NiO were investigated for their optical parameters before and after gamma irradiation. The presence of defects within the glass network and the addition of transition metals were found to affect the properties of the composites. After irradiation, a red shift was observed in the dissipation factor spectrum. The energy lost at the surface of the composites was larger than the energy lost within the constituent materials. All investigated composites showed insulating behavior and exhibited increased nonlinear optical parameters after irradiation, with the CoO-doped composite showing the highest values.

OPTICAL MATERIALS (2024)

Article Materials Science, Multidisciplinary

Down-conversion emission of Er3+doped sulfophosphate glass: The role of TiO2 and Ag nanoparticles co-embedment

Fahimeh Ahmadi, Zeinab Ebrahimpour, Asghar Asgari, Bao Van

Summary: In this study, Er3+-doped sulfophosphate glasses containing titanium nanoparticles (TiO2 NPs) and different concentrations of silver nanoparticles (AgNPs) were synthesized. The impact of AgNPs on the physical and structural characteristics, optical absorption and emission features, and photocatalytic activity of the glasses were investigated. The results showed that the addition of AgNPs enhanced the emission intensity of the glasses, with the system containing 0.04 mol% of AgNPs exhibiting optimal performance. Furthermore, the presence of AgNPs and TiO2 NPs in the glass matrix positively affected the photocatalytic performance.

OPTICAL MATERIALS (2024)

Article Materials Science, Multidisciplinary

Blue LD-pumped continuous wave a-cut Pr3+:LiYF4 near-infrared laser at 868 nm

Zhuang Li, Rongfei Huang, Wei Yuan, Shaoqiang Zheng, Wenlu Liao, Huiying Xu, Zhiping Cai

Summary: This study reports the first realization of an 868 nm Pr:YLF laser pumped by an InGaN blue laser diode. The laser achieved a maximum power of 641 mW with stable output and good beam quality. The experimental results were in agreement with theoretical simulations.

OPTICAL MATERIALS (2024)

Article Materials Science, Multidisciplinary

Direct detection of dopamine using zinc oxide nanowire-based surface plasmon resonance sensor

Bhishma Karki, Youssef Trabelsi, Amrindra Pal, Sofyan A. Taya, Ram Bharos Yadav

Summary: This study proposes an SF11 Prism- Ag- ZnO nanowires-CeO2-Sensing layer-based surface plasmon resonance sensor for measuring dopamine concentration in human blood. The sensor demonstrates high sensitivity and detection accuracy, and holds significant importance for early diagnosis of neurological diseases.

OPTICAL MATERIALS (2024)

Article Materials Science, Multidisciplinary

DFT theoretical and experimental investigations of the effect of Cu doping within SILAR deposited ZnS

M. Taoufiq, A. Soussi, A. Elfanaoui, A. Ait Hssi, S. Baoubih, A. Ihlal, K. Bouabid

Summary: In this study, the effect of copper doping within ZnS on glass substrates was investigated through experimental and theoretical approaches. Pure ZnS and Cu-doped ZnS films with varying copper concentrations were deposited on glass substrates using the SILAR technique. The structural, morphological, and optical properties of the films were characterized, and the theoretical FP-LAPW method based on density functional theory was employed to study the properties of copper-doped ZnS.

OPTICAL MATERIALS (2024)